Personally have always been in the why bother trying to clean it in the winter so my Pure White is really a nice grey at the moment and is likely going to stay that way.
If do actually clean it, usually when wife moans clothing is getting dirtied, then you really can see how dirty it actually is as huge swathes of white appear
So white is surprisingly a good colour as it does camouflage the dirt quite well and far better than my 2 previous black cars which always looked terrible when dirty.